Twin City Fan & Blower is an industry leading designer and manufacturer of high quality commercial and industrial fans. Our extensive product line includes centrifugal fans and blowers, axial fans, and power roof ventilators. Units range in size from 1/4 HP exhaust fans to 1750 HP heavy industrial units. For the commercial market, TCF supplies ventilation fans for retail and office buildings, restaurants, schools, hospitals, and government buildings. Industrial fan applications include air and material handling, air cleaning, ventilation, cooling, heating, combustion air supply, filtration and drying systems, fume hoods, spray-paint booths, and exhaust systems. Special materials, construction, coatings, and accessories are available to fit any application requirements.

Twin City Fan offers customers flexibility in fan design and construction, coupled with superior service before and after the sale. TCF's commitment to quality and dedication to customers has been our philosophy since the company started in the early 1970s. As a result, Twin City Fan & Blower continues to grow and provide fans throughout the world.

New Literature Fan manufacturers traditionally tested several sizes of fans out of a product line and used the fan laws to generate ratings for the complete line. A new Engineering Data Letter discusses the need for changing these testing methods. For more information, see ED-3700.